JPS58166191A - Lubricating mechanism for final speed-reducing gears of automobile - Google Patents
Lubricating mechanism for final speed-reducing gears of automobileInfo
- Publication number
- JPS58166191A JPS58166191A JP57049377A JP4937782A JPS58166191A JP S58166191 A JPS58166191 A JP S58166191A JP 57049377 A JP57049377 A JP 57049377A JP 4937782 A JP4937782 A JP 4937782A JP S58166191 A JPS58166191 A JP S58166191A
- Authority
- JP
- Japan
- Prior art keywords
- lubricating oil
- cavity
- ring gear
- differential
- carrier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/14—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated the lubricant being conveyed from the reservoir by mechanical means
- F16N7/28—Dip lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
- F16C19/546—Systems with spaced apart rolling bearings including at least one angular contact bearing
- F16C19/547—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings
- F16C19/548—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings in O-arrangement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
- F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/61—Toothed gear systems, e.g. support of pinion shafts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Motor Power Transmission Devices (AREA)
- Retarders (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は自動車用終減速機の潤滑機構に関する。[Detailed description of the invention] The present invention relates to a lubrication mechanism for a final reduction gear for an automobile.
自動車用終減速機においては、一般に、差動装置を支持
するディファレンシャルキャリヤの前方中央に前後一対
の軸受を介してドライブピニオンシャフトを軸支する筒
状の軸支部を設け、また同キャリヤの前方上部に前記差
動装置と一体のリングギヤによって掻き上げられた潤滑
油を前記両軸受間に形成した空所内に導ひく供給孔を設
け、更に同キャリヤの前方下部に前記空所から前記前方
の軸受を通って流れる潤滑油を前記差動装置、リングギ
ヤ等を収容する室内に導び〈開孔を設けて、前記両軸受
が前記空所内に導入された潤滑油により潤滑されるよう
になっている。In a final reduction gear for an automobile, a cylindrical shaft support that pivotally supports a drive pinion shaft via a pair of front and rear bearings is generally provided in the front center of a differential carrier that supports a differential gear, and a cylindrical shaft support that pivotally supports a drive pinion shaft is provided in the front upper part of the differential carrier. A supply hole is provided in the carrier for guiding the lubricating oil scooped up by a ring gear integrated with the differential gear into the cavity formed between the two bearings, and the front bearing is further supplied from the cavity at the lower front of the carrier. The lubricating oil flowing therethrough is guided into a chamber accommodating the differential, ring gear, etc. (openings are provided so that both bearings are lubricated by the lubricating oil introduced into the cavity).
しかして、従来は、リングギヤの低回転時においても両
軸受、特にリングギヤによって掻き北げられた潤滑油に
より直接潤滑されることのない前方の軸受に、必要十分
な量の潤滑油が供給されるように、前記供給孔の配置・
形状等が適切に設定されている。このため、リングギヤ
の高回転時には前記空所及び供給孔に潤滑油が充満して
循環が悪くなり、前記両軸受以外の各部材に供給される
潤滑油の量−々１不足したり、油温か異常に上昇したり
して、潤滑性が著しく低下することがある。Conventionally, even when the ring gear rotates at low speeds, a sufficient amount of lubricating oil is supplied to both bearings, especially the front bearing, which is not directly lubricated by the lubricating oil scraped up by the ring gear. The arrangement of the supply holes is as follows:
The shape etc. are set appropriately. For this reason, when the ring gear rotates at high speed, the cavity and the supply hole are filled with lubricating oil, resulting in poor circulation, and the amount of lubricating oil supplied to each member other than the two bearings may become insufficient, or the oil temperature may become insufficient. This may cause an abnormal increase in lubricity, resulting in a significant decrease in lubricity.
本発明はかかる実状に鑑みなされたもので、その目的は
、ディファレンシャルキャリヤの前記軸支部における形
状を変えることによって、リングギヤの低回転時におい
て前方の軸受へ供給される潤滑油の量を十分に確保しつ
つ、リングギヤの高回転時において当該ディファレンシ
ャルキャリヤ内を循環する潤滑油の量を増加して、潤滑
性を向トさせることにある。The present invention was made in view of the above circumstances, and its purpose is to ensure a sufficient amount of lubricating oil supplied to the front bearing during low rotation of the ring gear by changing the shape of the shaft support of the differential carrier. At the same time, the objective is to improve lubricity by increasing the amount of lubricating oil circulating within the differential carrier when the ring gear rotates at high speed.
以下に本発明の一実施例を図面に基づいて説明する。第
１図は自動車の後輪μ動用終城速機を部分的に示してい
て、この終減速機においてはディファレンシャルキャリ
ヤ１０が、前方中央に前後一対の円錐コロ軸受２０．２
１を介してドライブピニオンシャフト３０を軸支するｆ
１ｉ状の軸支部１１を備え、前方ｉＺ部にリングギヤ４
０の図示時計方向の回転によって掻き上げられた潤滑油
を両軸受２０．２１間に形成された空所Ｒ１内に導びく
供給孔１２を備え、前方下部に空所Ｒ１から前方の軸受
２０を通って流れる潤滑油をリングギヤ４０゜差動装置
５０等を収容する室Ｒ２に導びく開孔１６を備えている
。また、ディファレンシャルキャリヤ１０の前端開口部
１４とドライブピニオンシャフト３０間にはオイルシー
ル６０が介装されている。An embodiment of the present invention will be described below based on the drawings. FIG. 1 partially shows a final speed reduction gear for the rear wheels of an automobile. In this final reduction gear, a differential carrier 10 has a pair of front and rear conical roller bearings 20.2 in the front center.
f which pivotally supports the drive pinion shaft 30 via 1.
1i-shaped shaft support 11, and a ring gear 4 is provided at the front iZ part.
0 is provided with a supply hole 12 that guides the lubricating oil scooped up by rotation in the clockwise direction shown in the figure into the cavity R1 formed between both bearings 20 and 21, and the front bearing 20 is connected from the cavity R1 at the lower front part. It is provided with an opening 16 that guides the lubricating oil flowing therethrough to a chamber R2 that accommodates the ring gear 40° differential 50 and the like. Further, an oil seal 60 is interposed between the front end opening 14 of the differential carrier 10 and the drive pinion shaft 30.
しかして、本実施例においては、第１図及び第２図にて
示したように、ディファレンシャルキャリヤ１０の軸支
部１１における中間底部に、空所町と開孔１３を連通さ
せる連通孔１５が設けられるとともに、空所Ｒ１内に導
入された潤滑油の一部を前方の軸受２０に向けて導び〈
堰１６が設けられている。Therefore, in this embodiment, as shown in FIGS. 1 and 2, a communication hole 15 is provided at the intermediate bottom of the shaft support 11 of the differential carrier 10 to communicate the hole 13 with the hollow hole. At the same time, a part of the lubricating oil introduced into the cavity R1 is guided toward the front bearing 20.
A weir 16 is provided.
このように構成した本実施例においては、リングギヤ４
．０が図示時計方向へ回転すると、室Ｒ２内に封入した
潤滑油が掻きとげられて周囲に飛１枚し、至Ｒ２内に収
容されている各部材に付着して各部材を油滑するととも
に、供給孔１２を通って空所Ｒよ内に流入する。この空
所Ｒ０内に流入した潤滑油は前後に分流して（主として
前方に流れる）、前方の軸受２０を通って潤滑したのち
開孔１６を通って室−内士還流するとともに、後方の軸
受２１を通って潤滑したのち室Ｒ２内に還流する。なお
、オイルシール６０は軸受２０を通って開孔１３に流れ
る潤滑油によって潤滑される。かかる潤滑油の循環時、
潤滑油の熱はディファレンシャルキャリヤ１０及びキャ
リヤカバー７０等の壁に伝わって大気中に放出される。In this embodiment configured in this way, the ring gear 4
．． 0 rotates in the clockwise direction in the figure, the lubricating oil sealed in the chamber R2 is scraped off and scattered around, and it adheres to each member housed in R2 and lubricates each member, It flows into the cavity R through the supply hole 12. The lubricating oil that has flowed into this cavity R0 is divided back and forth (mainly flows forward), lubricates it through the front bearing 20, and then returns to the interior through the aperture 16. After passing through 21 for lubrication, it flows back into chamber R2. Note that the oil seal 60 is lubricated by the lubricating oil flowing into the opening 13 through the bearing 20. During the circulation of such lubricating oil,
The heat of the lubricating oil is transmitted to the walls of the differential carrier 10, carrier cover 70, etc., and is released into the atmosphere.
この大気中への放熱は、車両の走行によって大気（冷気
）をｌ接受けるディファレンシャルキャリヤ１０の前方
外周面、すなわち供給孔１？及び開孔１３の外壁面にお
いて効果的になされる。This heat dissipation into the atmosphere occurs on the front outer peripheral surface of the differential carrier 10, which is exposed to the atmosphere (cold air) while the vehicle is running, that is, through the supply hole 1. This is effectively done on the outer wall surface of the opening 13.
ところで、本実施例においては、ディファレンシャルキ
ャリヤ１０の軸支部１１こおける中間底部に、連通孔１
５と堰１６が設け１）れている。このため、リングギヤ
４０の低回転時には、空所Ｒ□内に流入する潤滑油の量
が少ないイ、のの、堰１６が有効に作用して前方の軸受
２０に潤滑油を導ひき、前方の軸受２０へ供給される潤
滑油の敏を十分に確保する（このときの潤滑油の主な流
れを第２図に破線の矢印にて示した）。このときには、
空所Ｒ１から後方の軸受２１に供給される潤滑油か少量
となるが、後方の軸受２１にはリングギヤ４０によって
掻き上げられた潤滑油の一部が直接付着するため、後方
の軸受２１の潤滑は十分になきれる。また、リングギヤ
４０の高回転時には、空所Ｒ１内に流入する潤滑油の量
が多くなるものの、連通孔１５が有効に作用して余剰の
潤滑油を開孔１３に流し、空所Ｒ工、供給孔１２内に潤
滑油が充満するのを防いで、ディファレンシャルキャリ
ヤ１０内を循環する潤滑油の量を従来に比して増大させ
る（このときの潤滑油の主な流れを第２図に実線の矢印
にて示した）。したがって、潤滑油が両軸受・２０，２
１以外の各部材にも十分に供給されるとともに、潤滑油
の熱が循環により良好に放出されて油温の異常上昇が抑
えられ、潤滑性が著しく向上する。By the way, in this embodiment, a communication hole 1 is provided at the intermediate bottom of the shaft support 11 of the differential carrier 10.
5 and a weir 16 are provided 1). Therefore, when the ring gear 40 rotates at low speed, the amount of lubricating oil flowing into the space R□ is small, and the weir 16 acts effectively to guide the lubricating oil to the front bearing 20, and Sufficient flow of lubricating oil is ensured to be supplied to the bearing 20 (the main flow of lubricating oil at this time is shown by broken line arrows in FIG. 2). At this time,
Although a small amount of lubricating oil is supplied from the space R1 to the rear bearing 21, some of the lubricating oil scraped up by the ring gear 40 directly adheres to the rear bearing 21, so that the rear bearing 21 is not lubricated. I can get enough of it. In addition, when the ring gear 40 rotates at a high speed, the amount of lubricating oil flowing into the cavity R1 increases, but the communication hole 15 works effectively and the excess lubricating oil flows into the opening 13. The supply hole 12 is prevented from being filled with lubricating oil, and the amount of lubricating oil circulating within the differential carrier 10 is increased compared to the conventional method (the main flow of lubricating oil at this time is shown by the solid line in Figure 2). (indicated by the arrow). Therefore, the lubricating oil is
In addition to being sufficiently supplied to each member other than 1, the heat of the lubricating oil is well released through circulation, suppressing an abnormal rise in oil temperature, and significantly improving lubricity.
なお、本発明の実施に際しては、連通孔１５゜堰１６の
形状を適宜変更して実施し得るものである。In addition, when carrying out the present invention, the shape of the communication hole 15° weir 16 may be changed as appropriate.
要するに、本発明においては、ディファレンシャルキャ
リヤ（１０）の軸支部（１１）における中間底部に、空
所（Ｒ１）と開孔（１３）を連通させる連通孔（１５）
を設けるとともに、空所（Ｒ１）内に導入された潤滑油
の一部を前方の軸受（２０）に向けて導び〈堰（１６）
を設けたことに特徴がある。かかる特徴のある自動車用
終減速機の潤滑機構においては、リングギヤ（４０）の
低回転時、堰（１６）によって前方の軸受（２０）へ供
給される潤滑油の量を十分に確保することができ、また
リングギヤ（−４０）の高回転時、連通孔（１５）によ
ってディファレンシャルキャリヤ（１０）内を循環する
潤滑油の量を増加させることができて、当該終減速機の
潤滑性を向上させることができる。In short, in the present invention, a communication hole (15) is provided at the intermediate bottom of the shaft support (11) of the differential carrier (10), which communicates the cavity (R1) with the opening (13).
At the same time, a part of the lubricating oil introduced into the cavity (R1) is guided toward the front bearing (20).
It is distinctive in that it has been established. In the lubrication mechanism of the automotive final reduction gear having such characteristics, it is possible to ensure a sufficient amount of lubricating oil supplied to the front bearing (20) by the weir (16) when the ring gear (40) rotates at low speed. Furthermore, when the ring gear (-40) rotates at high speed, the amount of lubricating oil circulating in the differential carrier (10) can be increased through the communication hole (15), improving the lubricity of the final reducer. be able to.
第１図は本発明の一実施例を示す部分断面図、第２図は
同要部拡大断面図である。
符 号 の 説 明
１０・・・・ディファレンシャルキャリヤ、１１・・・
・軸支部、１２・・・・供給孔、１６・・・・開孔、１
５・・・・連通孔、１６・・・・堰、２０・・・・前方
の軸受、２１・・・・後方の軸受、６０・・・・ドライ
ブピニオンシャ７）、４０・・・・リングギヤ、５０・
・・・差動装置、町・・・・空所、Ｒ２・・・・リング
ギヤ等を収容する室。
出願人 トヨタ自動車工業株式会社
代理人 弁理士 長 谷 照 −FIG. 1 is a partial cross-sectional view showing one embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view of the same essential part. Explanation of symbols 10...Differential carrier, 11...
・Axis support, 12... Supply hole, 16... Opening hole, 1
5...Communication hole, 16...Weir, 20...Front bearing, 21...Rear bearing, 60...Drive pinion shaft 7), 40...Ring gear , 50・
...Differential gear, town...empty space, R2...room that accommodates ring gear, etc. Applicant Toyota Motor Corporation Representative Patent Attorney Teru Hase -
Claims (1)
中央に前後一対の軸受を介してドライブピニオンシャフ
トを軸支する筒状の軸支部を設け、また同キャリヤの前
方上部に前記差動装置と一体のリングギヤによって掻き
上げられた潤滑油を前記両軸受間に形成した空所内に導
びく供給孔を設け、更に同キャリヤの前方下部に前記空
所から前記前方の軸受を通って流れる潤滑油を前記差動
装置、リングギヤ等を収容する室内に導び〈開孔を設け
て、前記両軸受が前記空所内に導入された潤滑油により
潤滑されるようにした自動車用終減速機の潤滑機構にお
いて、前記ディ７アレンシヤルキヤリヤの軸支部におけ
る中間底部に、前記空所と開孔を連通させる連通孔を設
けろとともに、前記空所内に導入された潤滑油の−１Ｉ
（Ｓ′に前記前方の軸受に向けて導ひく堰を設けたこと
を特徴とする自動車用終減速機の潤滑機構。A cylindrical shaft support for supporting the drive pinion shaft via a pair of front and rear bearings is provided at the front center of the differential carrier that supports the differential, and a ring gear integrated with the differential is provided at the upper front of the carrier. A supply hole is provided for guiding the scooped up lubricating oil into the cavity formed between the two bearings, and the lubricating oil flowing from the cavity through the front bearing is further provided in the lower front part of the carrier to the differential gear. , a lubrication mechanism for a final reduction gear for an automobile, in which an opening is provided in a chamber housing a ring gear, etc., so that both the bearings are lubricated by the lubricating oil introduced into the cavity; A communication hole is provided at the intermediate bottom of the shaft support of the allencial carrier to communicate the cavity with the opening, and -1I of the lubricating oil introduced into the cavity is provided.
(A lubrication mechanism for a final reduction gear for an automobile, characterized in that S' is provided with a dam that guides the flow toward the front bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57049377A JPS58166191A (en) | 1982-03-27 | 1982-03-27 | Lubricating mechanism for final speed-reducing gears of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57049377A JPS58166191A (en) | 1982-03-27 | 1982-03-27 | Lubricating mechanism for final speed-reducing gears of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58166191A true JPS58166191A (en) | 1983-10-01 |
Family
ID=12829328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57049377A Pending JPS58166191A (en) | 1982-03-27 | 1982-03-27 | Lubricating mechanism for final speed-reducing gears of automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58166191A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6682222B2 (en) * | 2001-08-22 | 2004-01-27 | General Electric Company | Bi-directional oil scoop for bearing lubrication |
-
1982
- 1982-03-27 JP JP57049377A patent/JPS58166191A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6682222B2 (en) * | 2001-08-22 | 2004-01-27 | General Electric Company | Bi-directional oil scoop for bearing lubrication |
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